12 + x = 0.80(x + 20)
Solve the linear equation

20

Step-by-step explanation:

12+x=0.8(x+20)

Divide both sides by 0.8:

15+1.25x=x+20

Subtract x from both sides:

0.25x+15=20

Subtract 15 from both sides:

0.25x=5

Multiply both sides by 4:

x=20. Hope this helps!

x = 20

Step-by-step explanation:

12 + x = 0.80(x + 20)

Distribute the 0.80 on the right side.

12 + x = 0.8x + 16

Subtract 0.8x from both sides.

12 + 0.2x = 16

Subtract 12 from both sides.

0.2x = 4

Divide both sides by 0.2.

x = 20

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation: